Sift together all dry ingredients.,Add shortening, 1/2 cup of buttermilk,and coffee.,Beat for 2 minutes until well blended and glossy.,Add 1/3 cup of buttermilk or sour milk, 2 eggs,and 1,teaspoon,of,vanilla.,Beat for 2 minutes until smooth.,Pour into 2 lightly greased and floured 8-inch layer cake pans.,Bake for,30,to,35 minutes at 350°.,______,Ice with Commercial Icing,recipe from this book.,Cover top with chocolate chips. Serve cold.